Button-sewing machine.



Patented Jan. 13, 1914.

3 SHEETS-SHEET l.

C. A. ANDERSON.

BUTTON SEWING MACHINE.

APPLICATION FILED MAR. s, 1913.

www?.

C. A. ANDERSON.

BUTTON SEWING MACHINE.

APPLICATION FILED MAR.8;1913` Patented Jan. 13, 1914.

3 SHEE'I'SSHEET C. A. ANDERSON.

BUTTON SEWING MACHINE.

APPLICATION FILED MAR. s, 191s.

1,088,907, Patented Jan. 13, 1914.

3 SHEETS-SHEET 3.

l thread loops can be mutually engaged above `ratusis to rmly lock each ot.' a series ol CARL A. ANDERSON, OF LOWELL, IVIASSACHUS MACHINE COMPANY, OF SOSTON, MASSA() .y ,l l

rTs,AssIG1\ToR 'ro Runen BUTTON HOLEI UsETTs, A coRPoRA'rioN or MAINE.

BiITToN-snwmcl' MAGHINE.

roe-3,9107.

l Specification of Letters Patent.

E. Application filed March 8, 1913.

Patented dan. 13,1914. serial No. 752,963.

To aZZ whom it may concern:

Be it known that I, CARL A. ANDnRsoN,a subject of the King of Sweden, residing at Lowell, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Button-Sewing y Machines, of which the following is a speci- ,f iication.

This invention relates to machines for; sewing buttons to shoes, or other material or articles of manufacture, and has partie 1- lar reference to that type of machine adapted to fasten shank-eye buttons by means of a single thread, employing primar,T and sccondary loops, one ot' which passesfthrough' the shank-eye of the button, the other or secondary loop beingsT passed through the primary loop and then cast over the buttonA and interlocked with the Infimary loop bellow the button.

One object of my invention is to provide a machine employing two needles operating; from opposite sides ot' theiidrk-table and performing their complete operations for attaching the button while the button and the work to which it is attached is held stationary. `y

In anotheraspect an object' of my appashank-eye buttons by two loops ot' a. single thread, each carried from the under or rear or thread side of the work to the upper or front or button side, by means ot' two independent needles, the first constructed of hooked form to enable it to disengagre the thread after drawing it .through the work, the second needle fitted yat 'the under side to so cooperate with the first that 'the two` the "work, interlocked with the button eye and tightened. i

Other objects and advantages wil` appear hereinafter or will be obvious to those skilled in the art.

To this end my invention consists of the improvements which I shall now proceed to describe and claim.

0f the accompanying drawings .--lligure 1 is a' side elevation of so muc of a sewingmachine as isfiiecessary to illustrate my invention. Fig. 2'is an elevation from the right 'of Fig. l1. Figs. 3 to 7, inclusive, are detail figures, illustrating the operation of the machine: f'

Similar reference characters indicate similar parts in all of the views.

lIt may be mentioned at the outset that I do not attempt to illustrate parts of the machine, such as the work feed and take-up devices, as the same may be of any preferred oir well known constructiom @The base of the machine' is indicated at 10, the arm 11 rising from said base and having a head 12 for the bars of the needle, presser-foot and loop-spreader. The main shaft 13 is provided with a 'cam 14 for operating the rod or link 15 which is connected at its upper end to a lever 1G pivoted at 17 in the arm of the machine. The particular shape of the cam 14- is not illustrated, as the same forms no necessary part of my present invention. lt is, of course, so formed p us to impart to the needle the customary movements to cause the needle to penetrate the work and have the usualslight dwell to release the loop ot' thread. ashereinaiter described. The needle-bar 18 havinga needle 19 provided with an open eve or hook, is mounted in suitable ways in the head 12. A foot 20, to bear on the work has its shank 21 se'- enred to the head 12, as by screws 22. Since the buttons are-supplied above the toot 20, said toot is, as nearly all presser-feet are, slotted in the direction of movement otl the work as the latter is ied by suitable mechanism not, shown.

.The needle-lair 18 is provided with a pin 23 which ex-:teiuls into a slot formed in the head 12, or a suitable piece carried by said head, said slot havingr an inclined portion 2.11-, aud a straight portion 25, so that the tirst downward movement ot the needle-bur will result in it.l having a rotary movement imparted thereto, the latter part of the downward movement, as the pin 23 rides along the straight portion 25 of the slot, being in a direct line, without rotation. The

inclined port-ion 24 of the slot imparts subst'antiall'v a quarter turn to the needle.

In order that the lever 16 may cause the needle-bar to have the reciprocating and turning movements just mentioned, the needle-bar has secured thereto collars 2G betweenwhich is a sleeve 27, said sleeve surrounding` the needle-bar and havingy pins 28 entering elongated openings in the yokeshaped end 29 of the lever 16.

A cam 30 carried .by the main shaft 13 actu-vies n'pei @ncl of of ille loop spnaei being substantially ver which is y ai; one @nel i102@ clue [0 til-epm 6G lfling along the p0r- Of a iocl Ueming's tion of lha gli de groove. n Operation 1n the ar A; arm 35 lie buttons placed suCCesslvely and one oifnecl time, sulstsin-zialy the position shown with 3G projecting in 3, and this may be done by handg fncaclei' (.llliougli in piaclice zi suiable magazine and Th ed and in* @nwe and esc-apen it n'ieclnniisin will prei'- l' llii'w lower surelably be providecl for supplying ille butface Mined The inns lo ille pnsiiion mentioned. ii/'hen the so as i fics button is to be applied, the end of the causal nfead a may be empoiaiily Caught and lmlc.L by alle spi-ing clip G3 The timing of 3J 'ie Such tlmi il'ie upper needle l) f clnwn Vtlnnngli lie slank-eye Oille Lil, :is shown in lli j. -lij lower needle @l5 i 'neing digliis iine in position so that the The lnfeml leading from the clip lo the closed 2@ anal @ya ci lire lower needln is bcliinl ille upper neeille bn clse L10 "il, At this time the pin iff/ea lower neecll'@ bai' is at lle lower lo i if: lie guide slot 52, vniving in the direcv at ov 5G illnlion so that the slm ne incline( Aportion 3@ il SU.

' lille lllwar 1 v @nani n, ijy the infami i @allg 19.

i Gyro of disk Oli E i, so

Then The portion 39 liolfls the level' 5. iilni lower needle 5S ie" )wn in lli/g', `3, but

sill@ 'cnt quick neclle i" the bar ino lie hook of the iown in needlebm illustrates a position of the parts after the needle 58 has commenced to retreat so that the secondary loop is opened above the point Where it passes through the primary loop.

The mounting and operation of the loopspreader 38 is such that it moves from the position shown in Fig. 2 ill a downwardly inclined direction, being guided by the pin. 6G riding along the portioll 6T of the guidegroove ill the head 1Q, the tapering point of the loop-spreader entering the secondary loop, as shown ill Fig. 5, and thell continuing down to the position shown in Fig. The last portion of the downward nlovement of the loop-spreader is substantially vertical, being etiected by the portion G8 of tllo guide groove acting on the pin G6 of the loop-spreader shank, the recessed lower surface of the loolil-spreader covering, or partially covering the button so as to guide the secondary loop over the button as the take-up ltnot shown) acts to tighten the stitch. In practice the relative operations of the take-up and the loop-spreal'ler are such that the loop-spreader permits the takeup to act so as to slide the secondary loop otl' from the said loop-spreader.

Vtn Fig. 7 l illustrate the interlocking ol the prinnlry and secondary loops ullder the action ol" the take-up and after the loopspreader has left the secondary loop, it being understood, of course, tllat the take-up willV act later to tighten the stitch still further 4than indicated ill ltig. 7.

)after the completion of the attaching ol one button as explained', the feed mechanism (not shown) will advance the work to a position for the attachment of the next button, the upper needle lt) next moving from the position sllowll ill Fig. 2, to that shown ill ltlg. 3, preparatory to forming the next prin'lal'y loop,

"the reason for the rotation or turning of the upper needle-bar to enable the said upper needle, which a hooked eye needle` to have tlle thread thrown into said hook by the lower needle as described, and to lit then turn to position so that said primary loop wlll be presented properly to enable the lower needle to insert the secondary loop through it.

l. claim: l. A, button-sewing machine having a work-support, and stltch-'lornllng mecha- .'nisnl whereby interlocking primary and seeolldary loops are formed on the saine sido of the fabric as the button-eye and engaged with said eye, said mechanism including two needles movable alternately ill paths traversing the work-support at two separate points. A

2. .et button-sewing machine having a work-support, and sti'tch-forlning lllechanisnl'lth'ereby interlocking primary and seeondary loops areltormed on the same side of the fabric as the button-eye and engaged with said eye, said mechanism including,two

needles, movable in intersecting pathsyand lneans for reciprocating the needles alternately.

l 3. A button-sewing machine having a work-support, and stitch-forming mechanisnl including upper and lower needles, meansfor reciprocating the upper needle and turning it relatively to its longitudinal center, alld means for reciprocating the lower needle in a path at an angle to the upper needle and swinging` it laterally.

4. A button-sewing machine having a work-support, and stitch-:forming mechanisln whereby interlocking primary and secondary loops are formed on the same side oit the fabric as the button-eye and engaged with said eye, said mechanism including upper and lower needles movable in relatively ,inclined paths, one needle having a closed eye and the other a hooker opell eye, and means for reciprocating the needles alternately. 5. A button-sewing machine having a work-support, and stitcl'l-forming mechanism including an upper needle and a lower needle, one of which is movable in a path through the button-eye alld the other at one side of the said eye, means being provided whereby loops formed by the two needles are intel-locked on the sanlo side of the fabric as the buttoll.

t3. il button-sewing machine having a worksupport, stitchtotalling mechanism includingl two needles, one of which is movable in a path through the button-eye, and the other at one side of the said eye, means being provided whereby loops formed by thc two needles are interlocked, and a loopspreader to engage the loop fol-med by one needle and cast it over the button.

T. A button-sewing machine having a work-sllpport, and stitcll-fornlillg mechanism including two needles, one ot' which is movable in a` path through the button-eye, and the other-at4 one side of the `said eye, llleans being provided whereby loops formed by the two needles are intel-locked, a loopspreader to engage the loop formed by one needle and cast it over the button,-said spreader having an inclined tapering upper surface and a recessed lower surface, mea-ns being provided for in'lparting to said spreader a motion ill a downwardly inclined direction.

8. all, button-sewing machine having a work-support, a. stilell-forming` mechanism including all upper needle-having a hooked eye, and a lower needle having a closed eye, said needles being movable ill relatively inclined paths, lne-ans for reciprocating said needles alternately, and meansfor shifting the lower needle laterally to cause it to lay the thread in the hook of the upper needle.,

9. A button-sewing machine having a Work-support, a stitch-forming mechanism including an upperzneodle haring a hooked eye, and a lower needle having a closed eye, said needles beingl movable in relatively inclined paths, means for reciprocating said needles alternately, means tor shift-ing the lower needle laterally to cause it to lay the thread in the hook ot the upper needle, a loop-spreader, and means for moving said spreader in a downwardly inclined direction to enter a loop termed by the lower needle.

10. Apparatus for attaching shank-eye buttons by a single thread, including in combination, a device for holding a piece of Worx, .to thefront Side ot' which the buttons are to be attached by a single thread supplied at the rear side, a needle constructed and litted for taking the thread at the rear side ot the Work and carrying a loop thereof through the Work, and for thereafter disengaging the thread, and a second needle fitted at the rear side of the work for carrying a second loop of the thread through the Work, and engaging it at the front side of the Work with theiloop formed by the irst needle, said two needles having different paths of movement so related that the second needle in advancing to torni the second loop enters point-tiret in the irst loop while the ioop is held by the rst needle, whereby such loopsinay be interlocled with the button-eye and the loops tightened to firmly secure the button to the Work.

ll. Apparatus for attaclii buttons by a single thread, including bination, a device for holt work, to t-hefront side o' tons are `to be attached supplied at the rear side, structcdand iitted for t iii the rear side ot the wei loop thereof ti ou'h thereafter entirely before each ,hutten is fully attached, and a second needle fitted at the rear side of the work for carrying a second loop of the thread through the Work, and engaging it at the front. side ot' the Work with the loop formed by the first needle, whereby such loops may be interlocled With the button eye and the loops tightened to firmly secure the button to the work, said second needle being an eye-needle constructed to maintain permanent engagement with the thread throughoutthe attachment of a series of buttons.

l2. Apparatus for attaching shank-eye buttons by a single thread, including in combination, a device t'or holding a piece of work, to the trout side ot which the buttons are to be attached by a single thread supplied at the rear side. a needle constructed and fitted for taking the thread at the rear side of the Work and carrying a loop thereof lirst through the work and then through the eyeqot" a button` and for thereafter diseng ging the thread, and a second needle iitted at the rear side of the Work for carrying a second loop ot the thread through the Work, and engaging it at the front side of the Work iith the loop formed by the lirst needle, said second needle being an eyeneedle constructed to maintain constant engagement with the thread throughout the attachment' ot a series of buttons, and to so move at. the rear of the Work as togive thread to the lirstneedle atthe rear oi' the Work, and a spreader constructed and itted for taking part in casting such second loop the nutten head, whereby the loops .Ghtened and the button thereby red to the Work.

'iiony whereof I have atlixed my in presence of two' Witnesses.

f. NDERSO. 

